Multispectral television system

Abstract

The invention discloses a multispectral television system, which belongs to the technical field of photoelectricity and comprises a lens module, a multispectral imaging module and an image processing module, the lens module is used for collecting optical signals of a target scene; the multi-spectral imaging module is connected with the lens module to receive optical signals collected by the lens module, the multi-spectral imaging module comprises a multi-spectral detector, the multi-spectral detector comprises a silicon-based detector and a plurality of spectral sensors installed on the silicon-based detector, each spectral sensor comprises at least four different pixel array areas arranged in an array mode, and the pixel array areas are connected with the lens module. The silicon-based detector is provided with at least four channels with different spectral bands, and the silicon-based detector can detect the spectral bands penetrating through the pixel array areas, so that the multispectral detector can obtain images with different spectral bands according to optical signals collected by the lens module; the image processing module is connected with the multispectral imaging module to receive images of different spectral bands and extract accurate images of the target by distinguishing the target from different bands emitted by the surrounding scene.

Description

Technical Field

[0001] This invention belongs to the field of optoelectronic technology, specifically relating to a multispectral television system. Background Technology

[0002] With the continuous development of television imaging technology, it has been widely applied in fields such as television guidance and optoelectronic reconnaissance. In the television imaging process, continuous zoom lenses play a crucial role, enabling clear imaging of targets of different distances and sizes within a certain range. When searching or observing a target, a short focal length with a large field of view is generally used to increase the search range; while when detailed observation and tracking of a target are required, a long focal length with a small field of view is generally used to distinguish more details of the target. However, traditional visible light television struggles to distinguish special targets that resemble the scene in appearance but differ in material. Summary of the Invention

[0003] In view of one or more of the above-mentioned defects or improvement needs of the prior art, the present invention provides a multispectral television system that can realize multispectral imaging of the acquired image, thereby effectively extracting targets that are similar in appearance to the surrounding scene but different in material.

[0004] To achieve the above objectives, the present invention provides a multispectral television system, comprising a lens module, a multispectral imaging module, and an image processing module; the lens module is used to acquire light signals of a target scene, the multispectral imaging module is connected to the lens module to receive the light signals acquired by the lens module and perform multispectral imaging processing on them to obtain spectral images of different bands, and the image processing module is connected to the multispectral imaging module to receive the multispectral images and perform analysis to extract a precise image of the target; The multispectral imaging module includes a multispectral detector, which comprises a silicon-based detector and a plurality of spectral sensors arranged in an array on the silicon-based detector. Each spectral sensor includes multiple different pixel array regions arranged in an array, with the pixel array region size being greater than or equal to 2×2, used to form channels for at least four different spectral bands. The silicon-based detector is provided with pixel array regions corresponding to each of the pixel array regions to detect the spectral bands transmitted by each pixel array region, enabling the multispectral detector to acquire spectral images of at least four different bands based on the light signals collected by the lens module. Each pixel array region includes multiple pixel units arranged in an array, and the size of the pixel unit in the pixel array region is greater than or equal to 2×2; the pixel unit includes two symmetrically arranged C-shaped grooves, and the C-shaped grooves are made of a metallic metamaterial with a metasurface; and the groove height, groove width, symmetry gap, and gap between two adjacent pixel units of the C-shaped grooves on each pixel array region are set according to the spectral band channels to be formed by the pixel array region.

[0005] As a further improvement of the present invention, the pixel unit is capable of selectively transmitting light of different wavelengths in the 0.4μm~0.9μm band.

[0006] As a further improvement of the present invention, the multispectral detector further includes a silicon dioxide film layer, which is disposed on the side of the spectral sensor away from the silicon-based detector to protect the spectral sensor.

[0007] As a further improvement of the present invention, it also includes a high-definition imaging module connected to the lens module and the image processing module respectively. The high-definition imaging module receives the light signal collected by the lens module, performs high-definition imaging processing on it, and sends the processed high-definition image to the image processing module.

[0008] As a further improvement of the present invention, the lens module is a continuous zoom lens, including a lens tube in which an objective lens group, a zoom group, and a compensation group are sequentially arranged, and a zoom tube coaxially sleeved on the outer periphery of the lens tube corresponding to the zoom group and the compensation group. The outer peripheral wall of the microscope tube is provided with multiple variable magnification straight grooves that penetrate the tube wall and are spaced apart in the circumferential direction. A variable magnification curved groove that penetrates the tube wall is provided on the outer peripheral wall of one end of the variable magnification tube around its axis, and a compensation curved groove that penetrates the tube wall is provided on the outer peripheral wall of the other end of the variable magnification tube around its axis. The variable magnification curved groove and the compensation curved groove each correspond to one of the variable magnification straight grooves. Furthermore, the lens tube is also provided with a zoom pin group and a compensation pin group. The zoom pin group is used to pass through the zoom curve groove and the corresponding zoom straight groove in the radial direction from the outside to the inside, and its end is fixedly connected to the zoom group. The compensation pin group is used to pass through the compensation curve groove and the corresponding zoom straight groove in the radial direction from the outside to the inside, and its end is fixedly connected to the compensation group. Then, by rotating the zoom tube relative to the lens tube, the zoom pin group and the compensation pin group move in the corresponding zoom curve groove and the compensation curve groove, and at the same time move along the zoom straight groove, driving the zoom group and the compensation group to translate axially in the lens tube, thereby realizing the continuous zoom of the lens module.

[0009] As a further improvement of the present invention, a driving module is also included, which is connected to the lens module and the image processing module respectively, and can drive the lens module to continuously zoom according to the instructions of the image processing module.

[0010] As a further improvement of the present invention, one end of the zoom tube is provided with annular zoom teeth along the circumferential direction, and the drive module includes a zoom motor group corresponding to the zoom teeth. After the output gear of the zoom motor group meshes with the zoom teeth, it can drive the zoom tube to rotate continuously, thereby realizing the continuous zoom of the continuous zoom lens.

[0011] As a further improvement of the present invention, the lens tube is provided with a straight focusing groove that penetrates the tube wall along the axial direction on the outer periphery of its tube wall, corresponding to the objective lens group, and a focusing assembly that can be matched and connected to the lens tube is coaxially sleeved on its outer periphery. A curved focusing groove that penetrates the tube wall is provided on the outer periphery of the focusing assembly around its axis. The curved focusing groove is provided in correspondence with the straight focusing groove. Furthermore, the lens tube is also provided with a focusing pin assembly, which can pass through the focusing curve groove and the focusing straight groove in the radial direction from the outside to the inside and be fixedly connected to the objective lens assembly at its end. Then, by rotating the focusing assembly relative to the lens tube, the focusing pin assembly can be driven to slide in the focusing curve groove and the focusing straight groove, and drive the objective lens assembly to translate in the axial direction of the lens tube, thereby realizing the fine focusing of the continuous zoom lens.

[0012] As a further improvement of the present invention, a ring-shaped focusing gear is provided on the outer periphery of the focusing component, and the driving module includes a focusing motor group corresponding to the focusing gear. After the output gear of the focusing motor group meshes with the focusing gear, it can drive the focusing component to rotate continuously, thereby realizing the continuous micro-zoom of the continuous zoom lens.

[0013] As a further improvement of the present invention, the lens tube is provided with four linear zoom grooves, two zoom curve grooves and two compensation curve grooves, and two sets of zoom pin groups and two sets of compensation pin groups are provided accordingly, so that the zoom group and the compensation group are stably connected to the lens tube and the zoom tube.

[0014] The aforementioned improved technical features can be combined with each other as long as they do not conflict with each other.

[0015] In summary, the beneficial effects of the above-described technical solutions conceived by this invention compared with the prior art include: (1) The multispectral television system of the present invention includes a lens module, a multispectral imaging module and an image processing module. The lens module is used to acquire light signals of the target scene. The multispectral imaging module is connected to the lens module to receive the light signals acquired by the lens module and perform multispectral imaging processing on them to obtain images of different spectral bands. The image processing module is connected to the multispectral imaging module to receive images of different spectral bands and perform analysis to extract the target. The multispectral imaging module includes a multispectral detector. The multispectral detector includes a silicon-based detector and several spectral sensors mounted on the silicon-based detector. The spectral sensors include at least four different pixel array regions arranged in an array. The pixel units on the different pixel array regions can transmit light of different wavelengths, so that at least four different spectral bands are formed on the spectral sensors. The silicon-based detector is provided with a pixel array region corresponding to each pixel array region to detect the spectral bands transmitted by each pixel array region, so that the multispectral detector can acquire images of different spectral bands according to the light signals acquired by the lens module. Then, the image processing module extracts the accurate image of the target by distinguishing the different bands emitted by the target and the surrounding scene. The multispectral television system in this application has a simple structure and can achieve multispectral imaging of the acquired images, thereby effectively extracting targets that are similar in appearance to the surrounding scene but have different materials.

[0016] (2) The multispectral television system of the present invention, by setting a high-definition imaging module connected to the lens module and the image processing module, can perform high-definition imaging of the image captured by the lens and send it to the image processing module so that the image processing module can mark the identified target on the high-definition image.

[0017] (3) The multispectral television system of the present invention enables continuous tracking of targets in a scene by setting the lens module as a continuous zoom lens. (4) The multispectral television system of the present invention is configured to connect the driving module to the lens module and the image processing module respectively, and can drive the lens module to continuously zoom according to the instructions of the image processing module, so as to achieve clear imaging and automatic continuous tracking of the target in the scene. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of the multispectral television system in an embodiment of the present invention; Figure 2This is a schematic diagram of the structure of the multispectral detector in an embodiment of the present invention; Figure 3 This is a schematic diagram of the pixel unit structure in an embodiment of the present invention; Figure 4 This is a three-dimensional structural diagram of the multispectral television system in an embodiment of the present invention; Figure 5 This is a left view of the system structure of the multispectral television system in an embodiment of the present invention; Figure 6 This is a cross-sectional view of the system structure of the multispectral television system in an embodiment of the present invention; Figure 7 This is a schematic diagram of the lens tube structure of the lens module in an embodiment of the present invention; Figure 8 This is a schematic diagram of the zoom tube structure of the lens module in an embodiment of the present invention; Figure 9 This is a schematic diagram of the objective lens group, zoom group, and compensation group of the lens module in an embodiment of the present invention.

[0020] In all the accompanying drawings, the same reference numerals denote the same technical features, specifically: 1. Lens module; 101. Lens tube; 1011. Zoom linear groove; 1012. Focusing linear groove; 102. Zoom tube; 1021. Compensation curve groove; 1022. Zoom curve groove; 1023. Zoom gear; 103. Objective lens group; 1031. Pin group fixing threaded hole; 104. Zoom group; 1041. Pin group fixing threaded hole; 105. Compensation group; 1051. Pin group fixing threaded hole; 106. Pin group; 107. Focusing assembly; 1071. Focusing gear; 2. Multispectral detector; 21. Silicon-based detector; 22. Spectral sensor; 221. Pixel array area; 2211. Pixel unit; 3. Drive module; 301. Focusing motor assembly; 302. Variable magnification motor assembly; 4. Imaging components. Detailed Implementation

[0021] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the invention. Furthermore, the technical features involved in the various embodiments of this invention described below can be combined with each other as long as they do not conflict with each other.

[0022] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0023] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0024] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0025] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "over," and "on top" of the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0026] Example: Please see Figure 1The multispectral television system in a preferred embodiment of the present invention includes a lens module 1, a multispectral imaging module, and an image processing module. The lens module 1 is used to acquire light signals of a target scene. The multispectral imaging module is connected to the lens module 1 to receive the light signals acquired by the lens module 1 and perform multispectral imaging processing on them to obtain images of different spectral bands. The image processing module is connected to the multispectral imaging module to receive images of different spectral bands and perform analysis to extract the target.

[0027] like Figure 2 As shown, the multispectral imaging module includes a multispectral detector 2, which includes a silicon-based detector 21 and several spectral sensors 22 mounted on the silicon-based detector 21. Each spectral sensor 22 includes multiple different pixel array regions 221 arranged in an array. The size of each pixel array region 221 on the spectral sensor 22 is greater than or equal to 2×2, which is used to form channels for at least four different spectral bands. The silicon-based detector 21 is provided with a pixel array region corresponding to each pixel array region 221 to detect the spectral bands transmitted by each pixel array region 221, so that the multispectral detector can acquire images of different spectral bands based on the light signals collected by the lens module 1.

[0028] Specifically, each pixel array region 221 includes multiple pixel units 2211 arranged in an array, and the size of the pixel units 2211 in the pixel array region 221 is greater than or equal to 2×2. Further, as... Figure 3 As shown, the pixel unit 2211 includes two symmetrically arranged C-shaped grooves, which are made of a metallic metamaterial with a metasurface; and the groove height, groove width, symmetry gap, and gap between two adjacent pixel units 221 of the C-shaped grooves on each pixel array region 221 are set according to the spectral band channel to be formed in the pixel array region 221.

[0029] In this preferred embodiment, the pixel unit 2211 employs a symmetrical C-shaped metallic metamaterial three-dimensional structure. Under excitation by an external light field, local plasmon resonance is generated at the gap between the upper and lower surfaces of the C-shaped symmetrical structure, resulting in significant near-field enhancement. Simultaneously, selective supertransmission can be generated through mode hybridization. By changing the groove height, groove width, and symmetrical gap of the C-shaped groove, the transmission spectrum of the pixel unit 2211 can be modulated to form pixel units 2211 capable of transmitting different wavelengths, thereby forming pixel array regions 221 capable of transmitting different wavelengths. After the wavelengths transmitted from at least four pixel array regions 221 enter the corresponding pixel array regions on the silicon-based detector 21 for detection, at least four spectral images of wavelengths are formed. This allows the multispectral module to transmit at least four spectral images of wavelengths to the image processing module based on the light signal collected by the lens module 1. The image processing module extracts the accurate image of the target by distinguishing the different wavelengths emitted by the target and the surrounding scene. The multispectral television system in this application has a simple structure and can realize multispectral imaging of the acquired image, thereby effectively extracting targets that are similar in appearance to the surrounding scene but have different materials.

[0030] For example, such as Figure 2 As shown, the spectral sensor 22 has nine pixel array regions 221 arranged in an array to form nine channels of different wavelengths, so that the multispectral detector can form nine spectral images from the light signals collected by the lens module 1, thereby further improving the accuracy of the system in identifying targets.

[0031] Preferably, the silicon-based detector 21 is arrayed with multiple spectral sensors 22.

[0032] Preferably, the pixel unit 2211 can selectively transmit light of different wavelengths in the 0.4μm~0.9μm band. One pixel unit 2211 can selectively transmit light of a certain wavelength in the 0.4μm~0.9μm band. One pixel array region 221 includes multiple pixel units 2211 that can transmit the same wavelength.

[0033] Preferably, the multispectral detector 2 further includes a silicon dioxide film layer, which is disposed on the side of the spectral sensor 22 away from the silicon-based detector 21 to protect the spectral sensor.

[0034] More preferably, the multispectral television system of the present invention further includes a high-definition imaging module connected to the lens module 1 and the image processing module respectively. The high-definition imaging module receives the light signal collected by the lens module 1 and performs high-definition imaging processing on it, and sends the processed high-definition image to the image processing module.

[0035] The high-definition imaging module provided in this embodiment can perform high-definition imaging of the images captured by the lens and send them to the image processing module so that the image processing module can mark the identified targets on the high-definition image.

[0036] Furthermore, in the preferred embodiment, the lens module 1 is a continuous zoom lens, which preferably includes the following components: Figures 4-9 The lens tube 101, zoom tube 102, objective lens group 103, zoom lens group 104, compensation group 105, and pin group 106 are shown.

[0037] Further, in the preferred embodiment, the continuous zoom lens includes a lens tube 101 accommodating the main body component and a zoom tube 102 coaxially sleeved on the outer periphery of the lens tube 101 and rotatable on its outer periphery; further, in the preferred embodiment, the lens tube 101 is generally cylindrical tubular in shape, which can be inserted into the zoom tube 102 at one end and work with it, and its interior is provided with an objective lens group 103, a zoom group 104 and a compensation group 105 arranged sequentially along the axial direction; further, after the lens tube 101 and the zoom tube 102 are fitted together, the zoom tube 102 corresponds to the zoom group 104 and the compensation group 105 inside the lens tube 101, so as to enable the zoom tube 102 to work in conjunction with the compensation group 105 and the zoom group 104; further, a plurality of zoom linear grooves 1011 penetrating the tube wall are provided axially on the outer peripheral wall of the end of the lens tube 101 that is connected to the zoom tube 102.

[0038] Further, in the preferred embodiment, the zoom tube 102 is a circular tube structure with a certain wall thickness, which can be sleeved on the outer periphery of the lens tube 101 along the axis and corresponds to the zoom group 104 and the compensation group 105 inside the lens tube 101; further, a zoom curve groove 1022 penetrating the tube wall is formed on the outer peripheral wall of one end of the zoom tube 102, which is spiral and formed around the axis of the zoom tube 102; correspondingly, a spiral groove, i.e., a compensation curve groove 1021, is formed on the outer peripheral wall of the other end of the zoom tube 102, which penetrates the tube wall and is formed around the axis of the zoom tube 102; further, the zoom curve groove 1022 and the compensation curve groove 1021 each correspond to a zoom straight groove 1011 provided on the lens tube 101.

[0039] In a preferred embodiment, two zoom curve grooves 1022 are formed on one end of the zoom tube 102, and it is further preferred that two compensation curve grooves 1021 are also formed on the other end of the zoom tube 102. Correspondingly, four zoom straight grooves 1011 are spaced apart on the outer periphery of the lens tube 101, with each of the four curve grooves corresponding to one zoom straight groove 1011. More preferably, any zoom curve groove 1022 can be formed by rotating one end of it 180° around the outer periphery of the zoom tube 102, that is, the two ends of the zoom curve groove 1022 form a 180° angle with respect to the line connecting the axes of the zoom tube 102, and the zoom curve groove 1022 is formed by rotating and extending one end of it 180° around the outer periphery of the zoom tube 102 at a certain angle.

[0040] Further preferably, in the preferred embodiment, the two zoom curve grooves 1022 are correspondingly arranged on the zoom tube 102, wherein one zoom curve groove 1022 is formed by rotating the other zoom curve groove 1022 180° around the axis of the zoom tube 102, that is, the line connecting the two zoom curve grooves 1022 on the same radial section passes through the axis of the zoom tube 102 and is perpendicular to the axis; further preferably, the two compensation curve grooves 1021 are correspondingly arranged on the zoom tube 102, wherein one compensation curve groove 1021 is formed by rotating the other compensation curve groove 1021 180° around the axis of the zoom tube 102; further preferably, in the preferred embodiment, the ends of the zoom curve grooves 1022 and the compensation curve grooves 1021 that are away from the two ends of the zoom tube 102 are on the same radial section, so that the compensation group 105 and the zoom group 104 can be sufficiently close.

[0041] More preferably, the ends of the zoom curve groove 1022 and the compensation curve groove 1021 that are close to each other are 90° apart from the line connecting them to the axis of the zoom tube 102, so that the slots on the zoom tube 102 can be opened evenly, ensuring the rigidity of the zoom tube 102; correspondingly, the number of zoom straight grooves 1011 opened on the lens tube 101 in response to the curve grooves on the zoom tube 102 is four. The four zoom straight grooves 1011 are set at 90° intervals on the outer peripheral wall of the lens tube 101, that is, any one zoom straight groove 1011 can be rotated 90°, 180°, or 270° around the axis of the lens tube 101 to obtain the other three zoom straight grooves 1011.

[0042] Furthermore, in the preferred embodiment, the objective lens assembly 103 is as follows: Figure 6As shown, it is disposed inside one end of the lens tube 101, preferably including a cylindrical tubular frame, and the lens assembly of the objective lens group 103 is placed inside the frame. A pin assembly fixing threaded hole 1031 is provided on the objective lens group frame at the position corresponding to the focusing linear groove 1012. Further, a certain number of focusing linear grooves 1012 are provided on the outer peripheral wall of the lens tube 101 corresponding to the objective lens group 103, penetrating the tube wall and with the axis parallel to the axis of the lens tube 101, so that the pin assembly 106 can be fixed at one end in the pin assembly fixing threaded hole 1031 after passing through the focusing linear groove 1012.

[0043] Furthermore, in the preferred embodiment, after the lens tube 101 and the zoom tube 102 are fitted together, the objective lens group 103, the zoom group 104, and the compensation group 105 are sequentially arranged inside the lens tube 101. The positions of the zoom group 104 and the compensation group 105 correspond to the zoom tube 102, that is, the zoom tube 102 is fitted inside the lens tube 101 at the end where the zoom group 104 and the compensation group 105 are arranged. After the zoom tube 102 is fitted onto the lens tube 101, the four curved grooves on the zoom tube 102 correspond to the four zoom straight grooves 1011 on the lens tube 101, and then two sets of pin groups 106 are arranged. After passing through the zoom curve groove 1022 and the zoom straight groove 1011 in sequence, the pins are fixed to the pin group fixing threaded holes 1041 on the zoom group 104. Two sets of pin groups 106 are also provided so that they pass through the compensation curve groove 1021 and the zoom straight groove 1011 and are fixed to the pin group fixing threaded holes 1051 on the compensation group 105. Therefore, when the zoom tube 102 rotates, the pin group 106 moves in the curve groove and the zoom straight groove 1011, which in turn drives the zoom group 104 and the compensation group 105 to move in the lens tube 101, thereby achieving continuous zoom and continuous tracking of targets in the scene.

[0044] More preferably, the multispectral television system of the present invention further includes a driving module 3, which is connected to the lens module 1 and the image processing module respectively. The driving module 3 can drive the lens module 1 to continuously zoom according to the instructions of the image processing module, so that the lens module can automatically and continuously zoom according to the instructions of the image processing module to achieve high-definition video recording and automatic continuous tracking of targets in the scene.

[0045] Preferably, in the preferred embodiment, the objective lens assembly 103 is disposed at the end of the lens tube 101 opposite to the zoom tube 102, and its position is such that the pin assembly fixing threaded hole 1031 on the outer periphery of the objective lens assembly 103 corresponds to the focusing linear groove 1012 on the lens tube 101. Furthermore, a focusing assembly 107 is disposed on the outer periphery of the lens tube 101, which in the preferred embodiment is a cylindrical sleeve structure that can be correspondingly sleeved on the outer periphery of the lens tube 101. Further, the focusing assembly 107... A spiral groove is provided on the circumference of the focusing linear groove 1012, which penetrates the tube wall. A pin assembly 106 can be set to pass through the spiral groove and the focusing linear groove 1012 on the focusing assembly 107 in sequence, and then be fixed at the end to the pin assembly fixing thread hole 1031 on the outer circumference of the objective lens assembly 103. Thus, by rotating the focusing assembly 107, the pin assembly 106 can slide in the focusing linear groove 1012 and move the objective lens assembly 103 back and forth to complete the focusing process.

[0046] More preferably, a ring of zoom teeth 1023 is uniformly arranged on the outer peripheral wall of one end of the zoom tube 102, which is arranged along the radial section of the zoom tube 102 to cooperate with the rotation of the zoom tube 102 to realize zoom. Correspondingly, the drive module 3 includes a zoom motor group 302 with the zoom teeth 1023 arranged in response. The output shaft of the zoom motor group 302 is provided with a gear that can mesh with the zoom teeth 1023, so that the zoom motor group 302 can drive the zoom tube 102 to rotate, thereby realizing the sliding of the pin group 106 in the curved groove and the zoom straight groove 1011, thereby driving the zoom group 104 and the compensation group 105 to move along the axis of the zoom tube 102, realizing the continuous zoom of the continuous zoom lens. More preferably, a focusing gear 1071 is preferably provided on one side of the focusing assembly 107 along the circumferential direction. The drive module 3 also includes a focusing motor group 301 corresponding to the focusing gear 1071. The output shaft gear of the focusing motor group 301 meshes with the focusing gear 1071 to control the continuous and uniform rotation of the focusing assembly 107, thereby realizing the continuous back-and-forth movement of the objective lens group 103 and thus completing the continuous fine focusing of the objective lens group 103.

[0047] More preferably, a rear fixing group is provided at the tail of the lens tube 101, that is, on the side of the compensation group 105 away from the zoom group 104, for fine adjustment of the composite focal length of the continuous zoom lens system, so as to ensure that the system image falls on the image plane of the imaging element; more preferably, the ends of the lens tube 101 and the zoom tube 102 that are matched and connected are respectively provided with ball bearings in the circumferential direction to assist the rotational movement of the zoom tube 102.

[0048] More preferably, an imaging component 4 is provided on the side of the rear fixation group away from the lens tube 101. The imaging component 4 includes a multispectral imaging module and / or a high-definition imaging module for performing multispectral imaging and / or high-definition imaging.

[0049] Furthermore, after the main components of the lens module 1 are assembled, a drive module 3 is set on its top. In a preferred embodiment, the drive module 3 contains an encoder motor drive chip, which receives the actual speed and position of the motor from the encoder on the motor, and then compares the feedback value with the target value to calculate the error. Further, the motor drive chip adjusts the control signal according to the calculated error and sends it to the zoom motor group 302 and / or the focus motor group 301, and drives the motors to rotate, thereby realizing the continuous zoom of the lens module 1, and the lens module 1 acquires image information.

[0050] Those skilled in the art will readily understand that the above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A multispectral television system characterized by, The application relates to a multi-spectrum imaging device, which comprises a lens module, a multi-spectrum imaging module and an image processing module; the lens module is used for collecting light signals of a target scene; the multi-spectrum imaging module is connected with the lens module and is used for receiving the light signals collected by the lens module and performing multi-spectrum imaging processing on the light signals to obtain spectrum images of different wave bands; and the image processing module is connected with the multi-spectrum imaging module to receive the multi-spectrum images and analyze and extract accurate images of targets. The multi-spectrum imaging module comprises a multi-spectrum detector, the multi-spectrum detector comprises a silicon-based detector and a plurality of spectrum sensors arranged on the silicon-based detector in an array, the spectrum sensors comprise a plurality of different pixel array areas arranged in an array, the scale of the pixel array areas of the spectrum sensors is greater than or equal to 2*2, and the spectrum sensors are used for forming channels of at least four different spectrum wave bands. The silicon-based detector is provided with a pixel array area corresponding to each pixel array area, so as to detect the spectrum wave bands transmitted by each pixel array area, and the multi-spectrum detector can obtain spectrum images of at least four different wave bands according to the light signals collected by the lens module. Each pixel array area comprises a plurality of pixel units arranged in an array, the scale of the pixel units of the pixel array area is greater than or equal to 2*2, the pixel units comprise two symmetrically arranged C-shaped grooves, the C-shaped grooves are made of metal metamaterials with super-structured surfaces, and the groove height, groove width, symmetric gap and gap between adjacent two pixel units of the C-shaped grooves on each pixel array area are set according to the spectrum wave band channels required to be formed by the pixel array area.

2. The multispectral television system of claim 1, wherein, The pixel units can selectively transmit light of different wavelengths in a 0.4-0.9 mu m wave band range.

3. The multispectral television system of claim 1, wherein, The multi-spectrum detector further comprises a silicon dioxide film layer arranged on the side of the spectrum sensor away from the silicon-based detector to realize protection of the spectrum sensor.

4. The multispectral television system of claim 1, wherein, The application further relates to a high-definition imaging module connected with the lens module and the image processing module respectively, the high-definition imaging module receives the light signals collected by the lens module, performs high-definition imaging processing on the light signals, and sends the processed high-definition images to the image processing module.

5. The multi-spectral television system of any of claims 1-4, wherein, The lens module is a continuous zoom lens, which comprises a lens tube provided with an objective lens group, a zoom group and a compensation group in sequence and a zoom tube coaxially sleeved on the outer periphery of the lens tube and corresponding to the zoom group and the compensation group. A plurality of zoom straight grooves penetrating the wall and arranged in a circumferential direction are formed on the outer periphery wall of the lens tube in an axial direction, a zoom curve groove penetrating the wall is formed on the outer periphery wall of one end of the zoom tube around the axis, a compensation curve groove penetrating the wall is formed on the outer periphery wall of the other end of the zoom tube around the axis, and the zoom curve groove and the compensation curve groove correspond to one zoom straight groove respectively. And the mirror tube is further provided with a variable magnification pin group and a compensation pin group, the variable magnification pin group is used for sequentially penetrating the variable magnification curved slot and the corresponding variable magnification straight slot from outside to inside in the radial direction and being fixedly connected with the variable magnification group at the end thereof, the compensation pin group is used for penetrating the compensation curved slot and the corresponding variable magnification straight slot from outside to inside in the radial direction and being fixedly connected with the compensation group at the end thereof, then through the rotation of the variable magnification tube relative to the mirror tube, the variable magnification pin group and the compensation pin group move in the corresponding variable magnification curved slot and compensation curved slot, simultaneously move along the variable magnification straight slot and drive the variable magnification group and the compensation group to translate in the axial direction of the mirror tube, and continuous zooming of the lens module is realized.

6. The multispectral television system of claim 5, wherein, The driving module is further provided, and the driving module is connected with the lens module and the image processing module respectively, and can drive the lens module to continuously zoom according to the instruction of the image processing module.

7. The multispectral television system of claim 6, wherein, One end of the variable magnification tube is provided with a variable magnification gear ring in the circumferential direction, the driving module comprises a variable magnification motor group corresponding to the variable magnification gear, and the output gear of the variable magnification motor group is matched and engaged with the variable magnification gear, so that the variable magnification tube can be continuously rotated, and the continuous zooming of the continuous zoom lens is realized.

8. The multispectral television system of claim 6, wherein, The mirror tube is provided with a focusing straight slot penetrating the tube wall in the axial direction on the outer periphery of the tube wall corresponding to the objective group, and a focusing assembly matched with the mirror tube is coaxially sleeved on the outer periphery of the mirror tube, a focusing curved slot penetrating the tube wall is formed on the outer periphery of the focusing assembly around the axis of the focusing assembly, and the focusing curved slot and the focusing straight slot are correspondingly arranged; And the mirror tube is further provided with a focusing pin group, which can sequentially penetrate the focusing curved slot and the focusing straight slot from outside to inside in the radial direction and be fixedly connected with the objective group at the end thereof, then through the rotation of the focusing assembly relative to the mirror tube, the focusing pin group can be driven to slide in the focusing curved slot and the focusing straight slot, and the objective group can be driven to translate in the axial direction of the mirror tube, and the fine focusing of the continuous zoom lens is realized.

9. The multispectral television system of claim 7, wherein, The outer periphery of the focusing assembly is provided with a focusing gear ring in the circumferential direction, the driving module comprises a focusing motor group corresponding to the focusing gear, and the output gear of the focusing motor group is matched and engaged with the focusing gear, so that the focusing assembly can be continuously rotated, and the continuous fine focusing of the continuous zoom lens is realized.

10. The multispectral television system of claim 5, wherein, The mirror tube is provided with four variable magnification straight slots, the variable magnification curved slot and the compensation curved slot are two respectively, and two variable magnification pin groups and two compensation pin groups are correspondingly arranged, and the variable magnification group and the compensation group are stably connected on the mirror tube and the variable magnification tube.

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